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There's always the option of taking the sea route between two places. People have taken advantage of the seas for as long a time as civilizations have existed. '''Hitchhiking a boat''' can be a great way to visit places you never would have visted otherwise (especially without an expensive and extremely pollutant plane tickettrip), and to experience both the romance and the harsh realities of traveling by sea. Getting rides on boats is much different from sticking your thumb out on the highway - it's less spontaneous and usually involves shared monetary costs - but many hitchhikers will still find it a rewarding and worthwhile method of transportation.